Enhanced CT and enhanced magnetic resonance difference is mainly reflected in three aspects, CT and magnetic resonance imaging principle is not the same, the contrast agent is not the same, CT and magnetic resonance advantages and disadvantages are not the same. Specifically as follows: 1, CT is to use X-rays to irradiate the human body; magnetic resonance is mainly with a magnetic field; 2, the contrast agent is different, CT contrast agent is mainly iodine agent, such as iophorol, iopamidol and so on. And magnetic resonance mainly with gadolinium agent, such as gadopentetate dextran. The impact on the human body is not the same, magnetic resonance contrast agent and CT contrast agent compared to the incidence of allergic reactions is relatively small; 3, the two methods of examination there are advantages and disadvantages.CT is the main advantage of density resolution is relatively high, the inspection speed is relatively fast, the main disadvantage is that there is radiation damage; magnetic resonance highlights the advantages of the main is the density of soft tissues resolution is relatively high, there is no radiation damage. The disadvantage is that the imaging speed is relatively slow. Therefore, in practice, the choice of CT enhancement or magnetic resonance enhancement should be determined on a case-by-case basis to determine which examination is more suitable for the patient or disease.